In Head Ball 2, specific events are held each week and an event character or event accessory is determined for each level range. By using these event accessories or event characters at the required upgrade level, you can benefit from their advantages (eg 2x points, gold, or fans at the end of the match) during the event.
Event character or event accessory can be used together with boosts and their effects stack. For example, if you use a 2x gold event character with a 2x gold boost, you can get 4x gold at the end of the match.
Note: If the event character that appears in the game does not match your level range, you must uninstall the game and reinstall it. For example, if you are in the 40-50 level range and the event character in the 30-39 level range appears, uninstalling and reinstalling the game will fix the problem.